spark plugs

[kakaben]

im some news spark plugs and need some help im looking for spark plugs that provide the best .....performance.....

but cant choose between NOLOGY / SILVER SPARK PLUGS or DENSO / IRIDIUM POWER SPARK PLUGS

so any one with knowlege suggest between the two or any better ones

[kakaben]

i forgot to say that these spark plugs are for my ....saxo 1.1 x 98.....

[dobbo_1]

both will give you 15 bhp and sick mpg :P

[Jackman]

Just buy NGK's!

Spark plugs won't make a difference.

[JamesR]

mate spark plugs make NO DIFFERNCE TO POWER. even if you get like £55 iridium ones, they will make no differnce. might seem like they have but not really. the only way it would make a difference is if your current ones are in bad shape. then it could restore osme lost power. other wise just get like £15 split V ones. there good. :y:

[AXracing]

Just buy NGK's!

Spark plugs won't make a difference.

Agree :y:

[CJonny]

a spark is a spark and it looks like you are looking for a power increase, and iridium plugs won't do anything unless you have a heavily modded engine. Just go for standard NGK's mate

[bpm]

On a 1.1 I have to agree its going to make sod all difference. BUT the difference between them is the cleanliness of the burn from the spark which will affect power (a bit). Which is why the V give a difference because youre effectively getting 2 sparks.

[shaunyboy]

Plus iridium, and platinum last longer, otherwise on a 1.1 just put normal plugs in.

[dobbo_1]

no plug will make any differance unless you have uprated coil pack jus put the ones that are like a 10er for a set in and save your self the money

[AXracing]

On a 1.1 I have to agree its going to make sod all difference. BUT the difference between them is the cleanliness of the burn from the spark which will affect power (a bit). Which is why the V give a difference because youre effectively getting 2 sparks.

sorry not true on two fronts. There is no difference in the sparks “cleanliness” and from a “V” plug you only ever get one spark same as for 3 or 4 prong heads you only get one spark.

[Steve]

im some news spark plugs and need some help im looking for spark plugs that provide the best .....performance.....

but cant choose between NOLOGY / SILVER SPARK PLUGS or DENSO / IRIDIUM POWER SPARK PLUGS

so any one with knowlege suggest between the two or any better ones

standard bocsh or ngk plugs are sufficient.
get 4 for roughly £5

regardless of a 1.1 only way you would ever need stupid priced spark plugs is on a stupid spec car.

[Ste]

http://www.classictruckshop.com/clubs/earlyburbs/projects/spark/plugs.htm

[Shak]

My motorbike kills ngk's so I now steer well clear of them.

[dobbo_1]

My motorbike kills ngk's so I now steer well clear of them.

doubt its the plugs ngk's are a very large company who are used through out the world in many different app's

[titchster]

NGKs, bought some Bosch super4s, heard different things about em, sold em on, bought some NGKs, they do the job.

[vlatko_vts]

If you drive VTS or VTR you need a performance spark plugs, but if you like too much my choice would be DENSO. Really has differences from other spark plugs I know becouse I have drive them.

[Steve]

If you drive VTS or VTR you need a performance spark plugs, but if you like too much my choice would be DENSO. Really has differences from other spark plugs I know becouse I have drive them.


NO YOU DONT!

i know, because i had a VTR and now have a VTS.

[bpm]

People dont seem to understand this issue. The more heat produced by the spark (that is not wasted), the more fuel is burnt (even a moderate mechanic should know that each time not 100% of the fuel gets burnt), the more fuel burnt, the more power produced! Simple.

A V spark plug (of which there are many types) simply reduces the contact area of the main electrode, which means there is less heat dissipation and therefore more heat in the spark and therefore.............. (see above)

Irridium and other compounds are also used to reduce quenching (heat dissipatioin) from the electrodes. All of which will inevitably (if effective) give more power!

[Jackman]

Question is though.

Is if what you say is true. how much power.

Can't see a spark plug make a massive difference your power personally.

[bpm]

No idea, BUT....

Heres a series of results from Dyno testing with different Spark plugs (on a Chrysler I think) http://www.sparkplugs.com/glossaryImage.asp?imgID=499

Shows you can get up to 4hp more with the right plug!

[vlatko_vts]

NO YOU DONT!

i know, because i had a VTR and now have a VTS.

In essence there is no need better spark plugs BUT if you upgrade the engine you must replace the spark plugs. The best is to buy 2 degrees colder because with every next racing engine is warm so that spark plugs are hot and can be broke and damage the engine. YOU DONT but is better to upgrade. :afro:

[JamesR]

i did ntice a slight increase when i got my split V ones now i come t think of it, but it was only very marginal, it might of just seemed that way, but it did feel a little nippier.

[AXracing]

No idea, BUT....

Heres a series of results from Dyno testing with different Spark plugs (on a Chrysler I think) http://www.sparkplugs.com/glossaryImage.asp?imgID=499

Shows you can get up to 4hp more with the right plug!

Just over 3bhp between plugs on an engine with over 200bhp is not a lot at all.Temperatures, humidity and even air pressure can make a bigger difference than that. There was over a 5bhp test of the same plugs. Just thought someone had better put that link in to perspective before some one reads way to much in to it

[AXracing]

People dont seem to understand this issue. The more heat produced by the spark (that is not wasted), the more fuel is burnt (even a moderate mechanic should know that each time not 100% of the fuel gets burnt), the more fuel burnt, the more power produced! Simple.

True but the spark only starts the burn and in standard cars the stock spark is already over done to allowed longer service intervals and easy cold starts.

A V spark plug (of which there are many types) simply reduces the contact area of the main electrode, which means there is less heat dissipation and therefore more heat in the spark and therefore.............. (see above)

Not really true. The multi head plugs are to try and give durability. The work the same as any normal plug but they spark only from the closest electrode and so as one starts to burn out the next nearest takes over. That was the theory at least but they tend to get choked up way before this so there is little if anything in it.

[don55]

plugs can make a huge difference.

IF, they are required.

on my 200sx, i was running jsut over 1 bar of boost on std plugs, i changed up 2 stages to 9's and got iridium also. made a huge difference to the temps and the running of engine.

but on a 60hp, standard 1.1 saxo, they will do exactly JACK lol

stick with the std ones matey, dont let the £60 price tag fool you into thinking they will do any other other £15 OEM ones.